ZOOLOGY AN'i) BOTANV, MIGUOSCOPY, El'C. 



65S 



The optical parts consist of an eyepiece with bi-convex eye lens, and 

 a plano-convex field lens, the plane surface turned towards the object. 

 The object glasses, of which there were five originally, consist of single 

 bi-convex lenses in brass mounts. A concave mirror, moving in a 

 gimbal, is placed below the stage fixed to the base of the stand. 



The apparatus in the ])ox consists of object glasses, spring stage, 

 stage forceps, frog plate, black and white disk, conic light modifier, 

 brass forceps, glass cells, and four ivory sliders. 



The whole Microscope is enclosed in a pyramidal oaken cabinet. 



This interesting old Microscope was lent for exhibition and descrip- 

 tion by Mr. Alfred Hodgson. 



Leitz New Model Microscopes.* — The illustration (fig. 122) shows a 

 new pattern Microscope stand D E, which has been designed with a view 

 to incorporating the most important features of the English and Con- 

 tinental models. 



The tripod base is well spread and is exceptionally rigid in the hori- 

 zontal as well as in the vertical position, and allows of free access to the 



Fig. 122. 



substage. The substage is of the compound type, consisting of rack- 

 and-pinion focusing adjustment, with centring screws controlling con- 

 denser sleeve, which is of the Royal Microscopical Society standard gauge. 



* Leitz Special Catalogue, 1912, 



